CTB-1 / Abell 85 (AaronW)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: 10 Cas · 9 Cas · HD108 · HD134 · HD163 · HD223624 · HD223767 · HD223987 · HD224055 · HD224215 · HD224403 · HD224669 · HD224892 · HD224939 · HD225094 · HD225160 · LBN 576 · PK116+00.1 · The star 10 Cas · The star 9 Cas

Image of the day 01/26/2023

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CTB-1 / Abell 85

Image of the day 01/26/2023

Powered byPixInsight

CTB-1 / Abell 85

CTB-1 / Abell 85 -- aka the Medulla nebula, the Popped Balloon nebula, the Garlic nebula, etc.

This supernova remnant is extremely faint -- even with 72 hours of data captured over 14 nights. H-alpha and S2 dominate, but O3 is there, and bringing out its wispy tendrils from a sea of deep red without blowing out the rest of the image required some careful processing. The starfield is extremely dense, and maintaining the delicate filaments proved quite challenging. When it comes to processing this target, I learned after many iterations that less is more.

I love how delicate this object looks, especially considering it is the result of an exploding star 10,000 light years away.

Processed in the Hubble palette entirely in PixInsight.

Hope you enjoy!

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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
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Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	6917246
PixInsight job	73MYLPJYSYQE2XXQJINTECO5MNSX5B1K
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h59m17s.44
RA (top/left)	23h52m39s.72
RA (top/right)	00h08m09s.23
RA (bottom/right)	00h06m37s.82
RA (bottom/left)	23h49m36s.18

Dec (center)	+62°56′02″.3
Dec (top/left)	+61°27′10″.6
Dec (top/right)	+61°37′10″.1
Dec (bottom/right)	+64°23′47″.1
Dec (bottom/left)	+64°12′39″.5

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Image of the day 01/26/2023

CTB-1 / Abell 85

Image of the day 01/26/2023

CTB-1 / Abell 85

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Image Index:

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Image of the day 01/26/2023

CTB-1 / Abell 85

Image of the day 01/26/2023

CTB-1 / Abell 85

Equipment

Acquisition details

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Sky plot

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